popa: Let me rework that: Domestic violence rates (and divorce rates to a slightly lesser extent) can provide a fairly good *comparative* guide to which communities have better successful marriage rates.
Disagree.
Two communities with equal marriage success could have wildly variable rates of divorce depending on how much the society looks down on divorce, and could have wildly different rates of domestic violence depending on how violent the cultures are.
It’s like if you’d try to prove that catholics have happier marriages because they have less divorce. They aren’t even allowed to divorce. (You weren’t actually talking about catholics, were you?)